Air purification device



FIG. 1 is a front, side perspective view of an air purification device;

FIG. 2 is a front, top perspective view thereof;

FIG. 3 is a front plan view thereof;

FIG. 4 is a rear plan view thereof;

FIG. 5 is a top plan view thereof, the bottom plan view being a mirror image;

FIG. 6 is a left side elevational view thereof, the right side elevational view being a mirror image;

FIG. 7 is an exploded front perspective view thereof; and,

FIG. 8 is a partial front plan view thereof, showing the grill detail in the bottom, right corner of FIG. 3 at an enlarged scale.

The broken line showing of buttons and an electrical cord is for the purpose of illustrating environmental structure and forms no part of the claimed design. 

CLAIM The ornamental design for an air purification device, as shown and described. 